Fish ladder



Feb. 16 1926. n 1,573,785-

J. F. ALBRIGHT FsH LADDER Filed August 15 1925 l 2 Sheets-Sheet 1 Feb. 16 1926. l1,573,785 J. F. ALBR|GHT FISH LDDER Filed August 15, 1925 2 sheets-SHQ@ 2 preferably at a point at which the current is Anot unusually swift so that the fish will not be suddenly released into a fast moving stream et water'which Would tend to Wash them down stream.v The relative arrangement of said extension of said chute thus is arranged to prevent the fish from being driven back over the dam by the swift running water.

As can be thus noted, the fish are lifted bodily from a point below the obstruction, 'shown as the dani f", and are kept at least partially submerged in water until they are released in a chute above said stream. The power necessary for moving said conveyor aaddles g is preferably supplied also bythe head of water caused by said dam f. As'

.is-shown in l? 3, also provide a fiume k which empties into a Water wheel Z connected te the shaft m carrying sprockets mf upon which 'the conveyor chains n are mounted.

nate injury to the fish 'and thus permitthem to reach their spawning ground above the object, which would otherwise prove an obstruction to their movement up stream.

In a fish ladder of the character described, lifting devices comprising a rotatable fish wheel having an axially arranged discharge, and a perpherally arranged inlet, an in clined chute, said discharge emptying into said inclined chute, the darter havingconveying mechanism therein', rthe upper end of said chute extending a substantial distance upstream, for the purpose described.

JOHN F. linearen@ 

